Fedora: Copy the certificate to /etc/pki/ca-trust/source/anchors/ then run update-ca-trust extract

But this is wrong, because
- RHEL 4 is deprecated an only supported under very special terms.
- for RHEL generation 7 the same instruction as for Fedora shut be used.
- The correct call for Fedora is "update-ca-trust" instant "update-ca-trust extract".